The Will to Know reminds us that Michel Foucault’s work only ever had one object: truth. Here, he builds on his earlier work, Discipline and Punish, to explore the relationship between tragedy, conflict, and truth-telling. He also explores the different forms of truth-telling, and their relation to power and the law. The publication of The Will to Know marks a milestone in Foucault’s reception, and it will no longer be possible to read him in the same way as before.